SAS / Serial Attached SCSI Hard Drives 3.5" LFF

SAS / Serial Attached SCSI 3.5" LFF Hard Drives are almost exclusively for usage in servers that use hot swappable (hot-swap) drives with a SAS hot pluggable backplane. You use a hard drive tray or caddy or sled, and simply slide and clip the drive into the front of your server. SAS hard drives can also be used in an internal, non hot-swap application. In this case they are connected by a cable to a connector on the SAS controller.